What are the operations of lathe machine?

What are the operations of lathe machine?

Following are the Lathe machine operations done either by holding the workpiece between centres or by a chuck:

• Turning Operation. Plain or Straight Turning. Rough Turning.
• Facing Operation.
• Chamfering Operation.
• Knurling Operation.
• Thread cutting Operation.
• Filing Operation.
• Polishing Operation.
• Grooving Operation.

What is lathe machine PDF?

Lathe machine is a general-purpose machine tool, which is used for machining different round objects. We can do different operations on the job by lathe machine. It is commonly used in the mechanical field. It makes the work easier and simpler. Mostly the simple jaws we can make on lathe machine tool.

What is the basic principle of lathe operation?

Lathe machine is one of the most important machine tools which is used in the metalworking industry. It operates on the principle of a rotating work piece and a fixed cutting tool. The cutting tool is feed into the work piece which rotates about its own axis causing the workpiece to form the desired shape.

What are the different types of machining operations?

The three principal machining processes are classified as turning, drilling and milling. Other operations falling into miscellaneous categories include shaping, planing, boring, broaching and sawing.

What are machine operations?

Noun. 1. machine operation – an elementary operation that a computer is designed and built to perform. computer operation. floating-point operation, flop – an arithmetic operation performed on floating-point numbers; “this computer can perform a million flops per second”

What are the types of machine tools?

Examples of machine tools are:

• Broaching machine.
• Drill press.
• Gear shaper.
• Hobbing machine.
• Hone.
• Lathe.
• Screw machines.
• Milling machine.

What is a turning process?

Turning is a machining process in which a cutting tool, typically a non-rotary tool bit, describes a helix toolpath by moving more or less linearly while the workpiece rotates. Thus the phrase “turning and boring” categorizes the larger family of processes known as lathing.

What is broaching operation?

Broaching is a machining process that uses a toothed tool, called a broach, to remove material. In rotary broaching, the broach is rotated and pressed into the workpiece to cut an axisymmetric shape. A rotary broach is used in a lathe or screw machine.

How are broaches classified?

A broach, which allows processing of several types of surfaces in one pass, is referred to as a combination broach. Depending on the cutting pattern, broaches are classified into broaches with profiled, stepped and group cutting pattern.

What is the main advantage of broaching over shaping process?

Explanation: In shaping, attaining full depth requires a number of strokes to remove the material in thin layers step-by-step by gradually infeeding the single point tool. Whereas, broaching enables remove the whole material in just a single stroke by gradually rising teeth of the cutter called broach.

How does a hex broach work?

The broaching holder serves two functions: It holds the broach tool in a free spinning bearing and places it at a 1-degree angle relative to the centerline of the workpiece. As the tool is thrust into the pre-drilled hole, the wobble effect causes the leading edge to rotate in and out of the cut like a cam.

What is continuous broaching?

In continuous broaching the broach is held stationary in the broaching machine and workpiece is moved continuously. The teeth of movement of the workpiece may be either straight, horizontal or circular. This is generally used for broaching a large number of similar workpieces at a time.

What is a rotary broach?

Rotary broaching is a rapid machining method that cuts shapes into or onto a workpiece. It involves using a broach, which is ground to the finished form, and a rotary broaching toolholder on a lathe or mill. One advantage of the rotary broaching process is that it can be used in blind or through-hole applications.

What is a hex broach?

Here is a 1/2″ high strength steel Hexagon Broach, push type, for use with arbor or hydraulic press. This converts a round hole into a hex, in just one pass. The length of cut based on mild steel. This broach is excellent to use for aluminum, mild steel, and it cuts plastic like butter.

What is broaching machine used for?

The broaching process, similar to shaping with multiple teeth, is used to machine internal and external surfaces such as holes of circular, square, or irregular shapes, keyways and teeth of internal gears. A broach is a long multi-tooth cutting tool with successively deeper cuts.

What is a broach in machining?

Broaching is a common machining process that’s used to selectively remove material from a workpiece. It differs from other machining processes by relying on a specific tool called a broach. As the broach pushes against or pulls through the surface of the workpiece, it leaves behind a hole.

What are the advantages and limitations of broaching?

• Fast and simple process.
• High degree of accuracy and finish is possible.
• Any shape of profile can be easily machined.
• Machining process is completed with one stroke of broach.
• Life of broach tool is high.
• Cutting temperature and tool wear is low.
• Doesn’t require a highly skilled operator.

What is a broach in sailing?

Broaching is when the boat heels too far to one side, or capsizes. The boat falls on its ear, its bow driving into the direction of the wind. The mast tips sideways, forcing its sails to sweep the water’s surface or submerge.

How do I start sailing?

5 Ways to Start Sailing

1. Complete our free eLearn course, “Your First Sail.” It only takes about 30-45 minutes, and covers all the basics for a new sailor or anyone looking to brush up.
2. Attend an On-Water Clinic at a boat show.
3. Sailing School Open House.
4. Take an introductory ASA sailing course.
5. Join an ASA Flotilla.

What is it called when a sailboat tips over?

In simple terms, it is called capsizing or keeling over. To correct this, you have to undergo another procedure called righting, which is merely the act of reversing a capsized vessel in the water. Some boats are self-righting, meaning that they can right themselves when they capsize.

What causes a boat to broach?

A broach is an abrupt, involuntary change in a vessel’s course, towards the wind, resulting from loss of directional control, when the vessel’s rudder becomes ineffective. This can be caused by wind or wave action. Both power and sailing vessels can broach when wave action reduces the effectiveness of the rudder.

What do you say when tacking?

The Helm declares that they are beginning to tack by saying, “Hard-A-Lee”. There are a couple variations on this command and if you want to say something else, it’s your boat, just make sure everyone on your boat understands what you are commanding.

Do I need a boom vang?

No you don’t “need” a boom vang. Well, except to race. And racing it the boom vang will buy you between a nothing and an extra half knot depending.

What is it called when you sail into the wind?

Sailing into the wind is a sailing expression that refers to a sail boat’s ability to move forward even if it is headed into (or very nearly into) the wind. A sailboat cannot make headway by sailing directly into the wind (see “Discussion,” below); the point of sail into the wind is called “close hauled”.

Why is gybing dangerous?

Dangers. A jibe can be dangerous in a fore-and-aft rigged boat because the sails are always completely filled by wind during the maneuver. A jibe can also result in a sudden change in the direction of heel, and can cause unexpected course changes due to the mainsail force changing from one side of the boat to the other …

What does Helms Alee mean?

Helms Alee: A term used by the helmsman to notify the crew that he has started to tack.